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Episode 4 - Frame Evaluation episode artwork

EPISODE · Nov 29, 2023 · 1H 13M

Episode 4 - Frame Evaluation

from core.py · host Pablo Galindo and Łukasz Langa

What makes Python an interpreter? Today we're talking about ceval.c, the wonders of frame evaluation, and how it changed over the years. # Timestamps (00:00:00)  INTRO (00:00:59)  BACK TO PYTHON 2.6 (00:02:53)  Stack virtual machine (00:04:41)  First encounter with opcodes (00:08:06)  What even is frame evaluation? (00:12:51)  Stack! Which stack? (00:15:46)  PRESENT DAY (00:16:41)  Computed gotos (00:21:22)  PEP 523: JIT me, maybe (00:26:53)  Let's generate the interpreter (00:29:08)  The JIT is coming (00:33:13)  Python function call inlining (00:37:23)  Instrumentation: DTrace, PEP 669 (00:41:50)  lltrace and pystats (00:44:02)  Eval breaker (00:47:54)  Signal handling (00:50:47)  Recursion limits (00:54:27)  String concatenation special case (00:58:24)  WHAT'S GOING ON IN CPYTHON? (00:58:42)  3.12.0a2 (00:59:12)  Critical section API adoption (00:59:34)  PyOnceFlag (01:00:28)  PyDict_GetItemRef() (01:03:36)  PyList_Extend() and PyDict_Pop() (01:04:18)  Parser: better error messages for non-matching elif/else (01:05:39)  glob.translate() (01:07:22)  TLS-PSK in the ssl module (01:08:35)  IDLE debugger improvements (01:10:50)  First micro-op in the Tier 2 interpreter (01:11:18)  OUTRO

What this episode covers

What makes Python an interpreter? Today we're talking about ceval.c, the wonders of frame evaluation, and how it changed over the years. # Timestamps (00:00:00)  INTRO (00:00:59)  BACK TO PYTHON 2.6 (00:02:53)  Stack virtual machine (00:04:41)  First encounter with opcodes (00:08:06)  What even is frame evaluation? (00:12:51)  Stack! Which stack? (00:15:46)  PRESENT DAY (00:16:41)  Computed gotos (00:21:22)  PEP 523: JIT me, maybe (00:26:53)  Let's generate the interpreter (00:29:08)  The JIT is coming (00:33:13)  Python function call inlining (00:37:23)  Instrumentation: DTrace, PEP 669 (00:41:50)  lltrace and pystats (00:44:02)  Eval breaker (00:47:54)  Signal handling (00:50:47)  Recursion limits (00:54:27)  String concatenation special case (00:58:24)  WHAT'S GOING ON IN CPYTHON? (00:58:42)  3.12.0a2 (00:59:12)  Critical section API adoption (00:59:34)  PyOnceFlag (01:00:28)  PyDict_GetItemRef() (01:03:36)  PyList_Extend() and PyDict_Pop() (01:04:18)  Parser: better error messages for non-matching elif/else (01:05:39)  glob.translate() (01:07:22)  TLS-PSK in the ssl module (01:08:35)  IDLE debugger improvements (01:10:50)  First micro-op in the Tier 2 interpreter (01:11:18)  OUTRO

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Episode 4 - Frame Evaluation

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How long is this episode of core.py?

This episode is 1 hour and 13 minutes long.

When was this core.py episode published?

This episode was published on November 29, 2023.

What is this episode about?

What makes Python an interpreter? Today we're talking about ceval.c, the wonders of frame evaluation, and how it changed over the years. # Timestamps (00:00:00)  INTRO (00:00:59)  BACK TO PYTHON 2.6 (00:02:53)  Stack virtual machine (00:04:41) ...

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